US3470002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glaze for high density alumina
Assignee: AT&T Inc
•
Filing: 1967-01-30
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Granted: 1969-09-30
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 Frank V Di Marcello
- 👤 Arnold W Treptow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:19
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; C; C03; C03C; C03C4/00; C03C8/00; C03C8/02; C03C8/10; C03C8/12; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/087; H10; H10N; H10N97/00; H10W; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W70/692
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2508511A
Cited
US3256136A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |